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Winds will gust up to 60 mph in some San Diego County mountain passes and foothills late today and overnight as an unusually strong low pressure system drops into Southern California and reduces temperatures throughout the region, says the National Weather Service. Winds hit 47 mph in East County through 3 p.m.

A wind advisory will be in effect until 6 p.m. today. Then it will be upgraded to a wind warning. Motorists in East County might have to cope with blowing dust. The wind will mostly be in the 25-30 mph range, ticking up to 50 mph this afternoon, then 60 mph in spots overnight. The weather will be most pleasant west of the mountains, with today's high in San Diego rising to 69, which is roughly normal. But forecasters say that the clouds will flow ashore this afternoon, cooling things off sharply. And temperatures could be 10 degrees below normal, or more, on Sunday, as the core of the trough moves through.

Surfline.com reports from Windandsea this morning that, "WNW-NW mid period swell mix is up a notch this morning as some new SW(200-225) groundswell slowly builds in. Most better exposures are in the waist-chest-shoulder high zone, with top NW spots pulling in some head high sets with even a few +'s possible. The bad news is that it's pretty tight with a South wind texture at all areas."